schema.py

from bs4 import BeautifulSoup
import requests

def checkUrl(url):
    r = requests.get(url)
    soup = BeautifulSoup(r.text, 'html.parser')
    types = set()
    for item in soup.find_all(itemtype=True):
        types.add(item.get('itemtype'))
    for t in types:
        if t:
            print('- contains a "{}" schema'.format(t))

tested url : https://www.allrecipes.com/recipe/95294/chewy-caramel/

- contains a "http://schema.org/BreadcrumbList" schema
- contains a "http://schema.org/Review" schema
- contains a "http://schema.org/Recipe" schema
- contains a "http://schema.org/ListItem" schema
- contains a "http://schema.org/NutritionInformation" schema
- contains a "http://schema.org/AggregateRating" schema
- contains a "http://schema.org/Rating" schema